Fig. 6
From: Targeting and sensitizing MDR cancer by an MMP2 and pH dual-responsive ZnO-based nanomedicine
A Tumor growth curves in the NCI/ADR-RES tumor-bearing nude mice (n = 3). B Images and weights of the excised tumors. C H&E staining and TUNEL assay of the tumor tissues. The scale bar is 100 μm. Administration: i.v. injection through the mouse tail vein at 5 mg·kg−1 DOX every 4 days for three times. Data were expressed as the mean ± SD, **p < 0.01; ***p < 0.001